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#pragma once
#include "ui_dropdown_item.h"
namespace ui
{
template < typename t = int >
class c_dropdown : public base_item {
public:
c_dropdown( int x, int y, int w, const char* name, t* setting,
std::vector< dropdowns::dropdown_item_t< t > >* items, size_t max_items = 8 ) :
base_item( x, y, w, 16, name ), m_dropdown_items( items ), m_setting( setting ),
m_max_items( max_items ) { }
virtual bool is_hovered( ) override {
if ( m_disabled ) return false;
int x = get_relative_x( );
int y = get_relative_y( ) + 12;
int h = m_height;
int mouse_x, mouse_y;
ui_get_cursor_pos( mouse_x, mouse_y );
return mouse_x >= x && mouse_x <= x + m_width
&& mouse_y >= y && mouse_y <= y + h;
}
inline bool is_any_item_hovered( ) {
if ( m_disabled || !m_active ) return false;
int x = get_relative_x( );
int y = get_relative_y( ) + m_height + 12;
int h = m_height * ( std::min< size_t >(
m_dropdown_items->size( ), m_max_items ) );
int mouse_x, mouse_y;
ui_get_cursor_pos( mouse_x, mouse_y );
return mouse_x >= x && mouse_x <= x + m_width
&& mouse_y >= y && mouse_y <= y + h;
}
virtual int get_total_height( ) const override {
return m_height + 13;
}
void draw_box( const int& x, const int& y, const char* str, bool hovered = false ) {
ui_draw_rect( x, y, m_width, m_height, hovered ? ui_get_disabled_col( ) : ui_get_bg_col( ) );
ui_draw_line( x, y + m_height, x + m_width, y + m_height, ui_get_accent_col( ) );
ui_draw_string( x + m_width / 2, y + 2, true, ui_get_text_col( ), str );
}
void update_value( ) {
for ( auto& it : *m_dropdown_items ) {
if ( it.m_value == *m_setting ) {
m_selected_item = ⁢
}
}
}
void draw_items( const int& x, const int& y ) {
auto& items = *m_dropdown_items;
auto it = &items.front( );
int offset = m_height + 1;
int hovered = 0;
int mouse_x, mouse_y;
ui_get_cursor_pos( mouse_x, mouse_y );
auto is_hovered = [ & ] ( int y_offset ) {
return mouse_x >= x && mouse_x <= x + m_width
&& mouse_y >= y + y_offset && mouse_y <= y + y_offset + m_height;
};
for ( size_t i = items.size( ) > m_max_items ? m_curr_scroll : 0;
i < std::min< size_t >( m_dropdown_items->size( ), m_max_items + m_curr_scroll );
++i, offset += m_height + 1
) {
it = &items.at( i );
draw_box( x, y + offset, it->m_name );
if ( is_hovered( offset ) ) {
hovered = offset;
if ( g_input.is_key_pressed( KEYS_MOUSE1 ) ) {
m_selected_item = it;
*m_setting = it->m_value;
m_active = false;
m_has_clicked_item = true;
}
}
}
if ( hovered ) {
ui_draw_outlined_rect( x - 1, y - 1 + hovered,
m_width + 1, m_height + 1, ui_get_text_col( ) );
}
}
void input( ) {
static float enable_time{ };
static bool needs_reenable{ };
bool active_backup = m_active;
bool active_changed = false;
if ( is_hovered( ) && g_input.is_key_pressed( KEYS_MOUSE1 ) ) {
if ( !m_mouse_held ) {
m_active = !m_active;
}
m_mouse_held = true;
}
else if ( !is_any_item_hovered( ) ) {
m_mouse_held = false;
}
if ( !is_hovered( ) && g_input.is_key_pressed( KEYS_MOUSE1 ) && !is_any_item_hovered( ) ) {
m_active = false;
}
if ( GetTickCount( ) * 0.001f > enable_time && needs_reenable) {
set_disabled_callbacks( false );
needs_reenable = false;
}
active_changed = m_active != active_backup;
//disable input on all items
if ( active_changed || m_has_clicked_item ) {
if ( !m_active ) {
enable_time = GetTickCount( ) * 0.001f + 0.220f;
needs_reenable = true;
}
else {
set_disabled_callbacks( true );
}
m_has_clicked_item = false;
}
if ( m_selected_item ) {
*m_setting = m_selected_item->m_value;
}
if ( m_active && m_dropdown_items->size( ) > m_max_items ) {
int scroll_input = g_input.get_scroll_state( );
if ( m_curr_scroll > 0 || scroll_input < 0 ) //we dont want scroll to loop around from 0 to max
m_curr_scroll -= scroll_input; //because positive is scroll up, we gotta flip it
if ( m_curr_scroll > m_dropdown_items->size( ) - m_max_items )
m_curr_scroll = m_dropdown_items->size( ) - m_max_items;
}
}
virtual void render( ) override {
int x = get_relative_x( );
int y = get_relative_y( );
bool restore = false;
RECT prev_rect{ };
if ( m_active ) {
restore = true;
g_d3d.get_device( )->GetScissorRect( &prev_rect );
RECT new_rect{
prev_rect.left,
prev_rect.top,
g_d3d.m_width,
g_d3d.m_height,
};
g_d3d.get_device( )->SetScissorRect( &new_rect );
draw_items( x, y + 11 );
//draw scrollbar
size_t total_items = m_dropdown_items->size( );
if ( total_items > m_max_items ) {
const size_t height = ( m_height + 1 ) * m_max_items;
const float slider_step = ( float )( height ) / float( total_items - m_max_items + 1 );
size_t slider_pos = static_cast< size_t >( slider_step * m_curr_scroll );
ui_draw_rect( x + m_width - 1, y + slider_pos + m_height + 13, 2, ( int )slider_step, ui_get_accent_col( ) );
}
}
update_value( );
input( );
ui_draw_string( x + 2, y, false, ui_get_text_col( ), m_text );
ui_draw_rect( x, y + 13, m_width, m_height, ui_get_disabled_col( ) );
ui_draw_outlined_rect( x - 1, y + 12, m_width + 1, m_height + 1,
is_hovered( ) || m_active ? ui_get_text_col( ) : ui_get_accent_col( ) );
if ( m_selected_item ) {
ui_draw_string( x + m_width / 2, y + 14, true, ui_get_text_col( ), m_selected_item->m_name );
}
if( restore ) {
g_d3d.get_device( )->SetScissorRect( &prev_rect );
}
}
protected:
std::vector< dropdowns::dropdown_item_t< t > >* m_dropdown_items{ };
dropdowns::dropdown_item_t< t >* m_selected_item{ };
bool m_active = false;
bool m_mouse_held = false;
bool m_has_clicked_item = true;
t* m_setting{ };
size_t m_max_items{ };
size_t m_curr_scroll{ };
};
}
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